Standard Motor Products RU978 Hvac Blower Motor Resistor

The Standard Motor Products RU978 is a direct-fit HVAC blower motor resistor designed to restore proper multi-speed fan operation to your vehicle's heating and air conditioning system. The blower motor resistor controls the voltage supplied to the blower motor, enabling the selection of multiple fan speeds through the cabin climate control panel.

When a blower motor resistor fails, common symptoms include the blower fan operating only on certain speed settings — typically only high speed — or not operating at all. Replacing the resistor with the Standard Motor Products RU978 restores full, proper fan speed control.

Key Features:

• Direct OE replacement — designed to meet or exceed original equipment specifications
• Controls blower motor fan speeds for precise cabin temperature and airflow management
• Manufactured to Standard Motor Products' stringent quality and durability standards
• Engineered for a precise fit, simplifying installation with no modifications required
• Helps restore all available fan speed settings to the HVAC system
• Constructed with high-quality resistor wire and thermal protection components

Standard Motor Products has been a trusted name in OE-quality replacement parts for over 100 years, delivering reliable components for engine management, temperature control, and electrical systems. The RU978 blower motor resistor is a cost-effective solution to restoring full HVAC functionality.